Q72715 - CESGRANRIO - 2010 - Petrobrás - Profissional Júnior - Direito

The fragment energy sources can change, never tomorrow, but always some day. (lines 68-69) implies that

a) energy sources may eventually change.
b) energy sources will certainly change overnight.
c) it is highly unlikely that energy sources will change one day.
d) it is possible to predict when the energy sources should change.
e) it is possible to anticipate the changes energy sources have to go through and their timing.

Inglês